# K-2SO US Federal Regulatory Search Decision Procedure

> K-2SO US Federal Regulatory Search Decision Procedure is a paid API for AI agents from k2so.wrong.systems, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-29).

Returns a plain-prose decision procedure for AI agents on how to search US federal regulatory sources, paid via x402 USDC microtransaction on Base.

## Facts

- Endpoint: GET https://k2so.wrong.systems/api/services/agent-facing-us-federal-regulatory-search-decisi?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/k-2so-us-federal-regulatory-search-decision-procedure-ca836a46
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YcLM_r6heyy_MTIvfpWUD

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability k-2so-us-federal-regulatory-search-decision-procedure-ca836a46
```

Example prompt: I need a decision procedure — a clear plain-English guide — for how an AI agent should search US federal regulatory sources; fetch the paid brief on the agent-facing US federal regulatory search topic.

## When to prefer this

Choose this endpoint when an autonomous agent needs structured, actionable guidance specifically for searching US federal regulatory sources and you want a ready-to-use prose decision procedure rather than raw regulatory data. It is ideal for agents that need to embed compliance search logic without building their own regulatory navigation heuristics, and for workflows where a $0.002 per-call micropayment model via x402 on Base is acceptable.

## Known failure modes

- HTTP 402 returned if USDC payment has not been settled — agent must pay exact amount and retry with PAYMENT-SIGNATURE header
- Invalid or missing input.type or input.method fields cause schema validation errors
- Upstream LLM unavailability may cause generation failure with ok:false in result
- Incorrect topic override may produce a less relevant decision procedure
- Network timeout on k2so.wrong.systems returns no response

## How this service works

Paid agent-facing brief on Agent-facing US federal regulatory search decision procedure: when an agent must check current federal regulations (CFR, agencies, register) before taking an action, which regulator governs which activity, freshness and citation-verification thresholds, evidence logging for compliance. Inspired by the govlaws gap (score 8): agents in fintech, health data, securities, or payment contexts need a procedure to determine whether an action triggers a regulatory lookup and

## Output

A JSON object containing a plain-prose decision procedure (120+ words) specifically written for AI agents on how to conduct US federal regulatory searches, including the model used to generate it, a timestamp, the generation source (llm, reasoning, or deterministic), and the service and provider identifiers. Payment metadata is also included confirming the x402 USDC settlement details.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "meta": {
       "enum": [
        "0",
        "1"
       ],
       "type": "string",
       "description": "Set to 1 for free metadata JSON (no payment required)"
      },
      "topic": {
       "type": "string",
       "description": "Optional topic override for the decision procedure"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "title": "Agent-facing US federal regulatory search decision procedure: when an paid response",
     "$schema": "https://json-schema.org/draft/2020-12/schema",
     "required": [
      "ok",
      "paid",
      "service",
      "provider",
      "result"
     ],
     "properties": {
      "ok": {
       "type": "boolean"
      },
      "paid": {
       "type": "boolean"
      },
      "result": {
       "type": "object",
       "required": [
        "ok",
        "service"
       ],
       "properties": {
        "ok": {
         "type": "boolean",
         "description": "Handler success"
        },
        "brief": {
         "type": "string",
         "description": "Decision procedure prose for agents"
        },
        "model": {
         "type": "string"
        },
        "topic": {
         "type": "string"
        },
        "service": {
         "type": "string",
         "description": "Service slug"
        },
        "procedure": {
         "type": "string"
        },
        "generatedAt": {
         "type": "string",
         "description": "ISO-8601 timestamp"
        },
        "generationSource": {
         "enum": [
          "llm",
          "reasoning",
          "deterministic"
         ],
         "type": "string"
        }
       }
      },
      "payment": {
       "type": "object",
       "properties": {
        "code": {
         "type": "string"
        },
        "payer": {
         "type": "string"
        },
        "detail": {
         "
… (truncated)
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "paid": true,
  "result": {
   "ok": true,
   "brief": "plain prose decision procedure (120+ words)",
   "model": "deepseek/deepseek-v4-flash-0731",
   "topic": "string topic",
   "service": "agent-facing-us-federal-regulatory-search-decisi",
   "procedure": "same as brief",
   "generatedAt": "2026-01-01T00:00:00.000Z",
   "generationSource": "deterministic"
  },
  "service": "agent-facing-us-federal-regulatory-search-decisi",
  "provider": "K-2SO"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/k-2so-us-federal-regulatory-search-decision-procedure-ca836a46/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from k2so.wrong.systems](https://www.zero.xyz/host/k2so.wrong.systems/llms.txt)